For the first time, music fans can enjoy all of the contestant performances from Season Seven of American Idol, television’s most popular show, exclusively on iTunes. This week, performances of the “American Idol” Top 24 semifinalists will be the first to appear on iTunes. You also can purchase music performances for 99 cents per song. Starting March 11, you’ll also be able to purchase the full video of Top 12 finalist performances for $1.99. And, beginning today, you can pre-order performances of your favorite contestants from the iTunes Store, which will automatically download the day after the show airs. The exclusive availability comes to you thanks to a partnership of Fox Broadcasting Company, Fox Interactive Media, 19 Entertainment, FremantleMedia and Apple.